Two: The backlight market of small size is slowing down, while the medium and large size have received new attention. Five: The landscape lighting market is developing rapidly, and the market growth rate reached its peak in 2007. Mono panel,High Quality Mono panel,Mono panel Details, Yangzhou Bright Solar Solutions Co., Ltd. Yangzhou Bright Solar Solutions Co., Ltd. , https://www.cnbrightsolar.com
One: LED display application market, its full-color display growth is very strong.
China's LED display market started relatively early, and a number of LED display manufacturers with strong strength have achieved certain development. Now we can see that LED display has been widely used in securities, stations, banks, hospitals. square. At the same time, the requirements for brightness and life of the LED of the display screen are higher than that of the LED indicator, and the LED exceeds the top of the list and becomes the main application market of LED. With its unique advantages, LED full-color display is widely used in stadiums, municipal squares, concerts, stations, airports and other places. 
In fact, LED has already been applied to the market of small-size LCD panel backlight based on mobile phones, and the appearance of color screen mobile phones has promoted the rapid development of the white LED market. However, as the output of mobile phones has entered a period of steady growth and technological improvements have led to a reduction in the number of LED backlights used in mobile phone LCD panels, the amount of LEDs used in mobile phone backlights has gradually slowed down. The number of LEDs used for backlights has reached more than 1 billion. Due to the slowdown in the number growth rate and the continuous decline in average prices, the growth of the small-size backlight market is ultimately weak. At this time, the medium and large-size backlight market has developed. 
Three: Applied to the automotive lamp market.
LED has not much room for development in the automotive field, because LED as a car lamp mainly benefits from the characteristics of low power consumption, long life and corresponding speed. Statistics show that when a car is traveling at a speed of 100 kilometers per hour, the braking distance of a vehicle equipped with LED brake lights will be reduced by 7 feet compared to a vehicle without LED brake lights. At present, LED has been gradually applied to the third brake light of the car. Although LED is currently facing low lumens per unit wattage and related policy restrictions, it will take some time to enter the automotive taillight and headlight market, but as the cost-performance ratio decreases and the luminous efficiency increases, the final LED will gradually be realized The shift from the interior of the car to the rear to the front eventually occupies the entire automotive lamp market. With the huge production capacity of automobiles, the LED lamp market is facing huge development potential. 
Four: The interior decoration lamp market gradually started.
The interior lighting market is another emerging market for LEDs. Through the control of current, LED can achieve hundreds or even thousands of colors. In the era of personalization at this stage, the diversification of LED colors helps the development of the LED decorative lamp market. LEDs have begun to be made into small decorative lamps, and decorative curtain walls are used in hotels and living rooms. In recent years, the market scale of interior decoration lamps has reached 158 million yuan. 
The landscape lighting market is dominated by decorative lighting in public places such as streets and squares, and the driving force comes mainly from the government. Affected by the 2008 Beijing Olympic Games and the 2010 Shanghai World Expo, Beijing, Shanghai and other venues have accelerated the pace of landscape lighting. Due to the low LED power consumption, they have a strong market competitiveness in the landscape lighting market with huge power consumption . At present, LED has been increasingly used in the landscape lighting market. In 2005, China's landscape lighting market scale exceeded 700 million yuan. Driven by the above two main activities, the landscape lighting market will reach a high growth rate of 72% in 2007. 
Six: LED application in the field of transportation.
After years of replacement work, traditional traffic lights in major cities across the country will be replaced by LED traffic lights. After years of high-speed growth, the LED traffic light market has reached a market size of about 1.8 billion yuan in recent years. However, with the completion of the replacement work, it is expected that the LED traffic light market will be further developed in the next few years 
At present, mature LED application markets include: architectural landscape lighting, architectural landscape lighting, advertising display screens, small-size LCD backlights, automotive applications, solar LED lighting, and LED energy-saving lamp manufacturers. When the market is at its most prosperous, LED energy-saving lamps must have dominated the market during the period when solar energy has not been popularized. In the future, there are broader application prospects, such as large and medium-sized LCD backlights, road lighting, indoor ordinary white lighting, artificial light sources for agricultural production, medical light sources, LED liquid crystal projectors, LED light sources for DLP rear projection, aviation Lighting source, museum cultural relic display lighting, etc.
The industrial chain of LED solid-state lighting is also widely distributed. Upstream of the industry chain, including semiconductor material supply, wafer manufacturing, packaging, etc. In the midstream, including power drives, optical components, heat sinks, etc. Downstream, including lamps, lighting management software, engineering system integration, etc. Among them, the function of the power drive unit is to provide a constant current for the LED, to achieve dimming, color mixing, communication with the host computer, thermal monitoring, etc. At present, special chips for LED drivers can be found in the product lines of many integrated circuit suppliers. Recently, the technology trend of this type of driver chip is that the power switching device is integrated into the chip, the switching mode operates at a higher frequency, and the chip has a wider operating voltage. For low current LED driving, this type of chip usually uses a switched capacitor to realize the charge pump, and the total output current is limited. For the driving of high-current LEDs, the switching topology based on inductance is generally adopted, such as boost buck sepic. Due to the operating frequency of MHZ, the inductance in it can already be miniaturized. Conversion efficiency is one of the important indicators of this type of circuit. Under the best conditions, it can achieve a maximum efficiency of 95%. Current loop control can be roughly divided into two categories, one is hysteresis control, and the other is average current control. Both have advantages and disadvantages. For hysteretic control, the dynamic response is fast but the current accuracy is poor. For average current control, the control accuracy is higher, but the dynamic response is slower. Both control modes require current signal sampling and feedback. There are multiple current sampling methods, including low-end current sampling, high-end current sampling, and floating current sampling. For different application requirements, different topologies, different control methods, and different current sampling positions can be used.
In general, the application of LEDs in the field of lighting is extremely wide and diverse, and is considered to be the third revolution in artificial light sources, and its impact is extremely far-reaching.
LED lighting market analysis
Driven by the emerging technology application market, the LED market has grown rapidly in recent years. The output of LEDs in China has reached more than 20 billion.